CVE-2026-90019
Published: September 18, 2026Last modified: October 6, 2026
Description
In the Linux kernel, the following vulnerability has been resolved: usb: gadget: fix null pointer dereference in usb_put_function_instance() usb_put_function_instance() attempts to dereference fd inside fi struct to get mod in uvc_alloc_inst() error path. However, fd is not allocated until later in try_get_usb_function_instance() after allocating fi in uvc_alloc_inst() and thus guranteed to be null in error path. Fix this by adding a null check for fi->fd that returns if fd is null.
Status
| Product | Release | Package | Status |
|---|---|---|---|
| Alpaquita Linux | 23 LTS | linux-lts | Fixed (6.1.189-r0) |
| 25 LTS | linux-lts | Fixed (6.12.111-r0) | |
| Stream | linux-lts | Fixed (6.18.53-r0) |
References
- https://git.kernel.org/stable/c/0fc54a00954f9f4c3e3d4ffa64a530685d99a39b
- https://git.kernel.org/stable/c/3a9691fff79bcce95338435599df6d3ae433cfdc
- https://git.kernel.org/stable/c/5117f236e9e30744338b425395d55913c4500897
- https://git.kernel.org/stable/c/6e6736c049683380f5e20becde498986e9293ca4
- https://git.kernel.org/stable/c/6e74ac5c596fd246e37eadfc354567179ccbe9aa
- https://git.kernel.org/stable/c/6ea3a073ca97716d4a73df49a3bec1c3ccf8e2a0
- https://git.kernel.org/stable/c/7a4f4ca7ff32ae24807c83e2a06d62b13378d53c
- https://git.kernel.org/stable/c/d3a7fa61997db3bf6dadef4c1bd87a4fa782a817